Anterior Triangle, Neck Flashcards Preview

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Flashcards in Anterior Triangle, Neck Deck (51):
1

identify 

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jugular foramen 

2

What is this? What muscle attaches here?

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mastoid notch

  • digastric m. 

3

8

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digastric fossa

4

10

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Mylohyoid line 

5

13

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genial tubercles of mandible 

6

a, b , c 

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Hyoid bone 

a: greater horn

b. lesser horn

c. body 

7

identify

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cricoid 

8

identify 

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digastric muscle 

9

What muscle is the arrow pointing to 

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stylohyoid muscle 

10

identify 

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Mylohyoid muscle 

11

identify

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Geniohyoid muscle 

12

Origin and insertion of digastric muscle

O: Posterior belly: mastoid notch; Anterior belly: Digastric fossa

I: intermediate tendon (near the lesser horn of the hyoid)

13

Innervation stylohyoid muscle

facial nerve  (CN VII)

14

Innervation Mylohyoid 

Mandibular nerve (CN V3)

15

Innervation of digastric muscle

Anterior belly: Mandibular nerve V3

Posterior belly: Facial nerve (CN VII) 

16

Innervation of geniohyoid muscle

C1 anterior ramus 

17

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Omohyoid muscle 

18

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Sternohyoid muscle 

19

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Sternothyroid 

20

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Thyrohyoid 

21

Name the 4 infrahyoid "strap" muscles. 

  • Sternohyoid
  • Omohyoid
  • Sternothyroid
  • Thyrohyoid

22

Innervation and action of infrahyoid muscles

N: C1-C4 anterior rami

A: depress/stabilize the hyoid 

23

what runs in the carotid sheath

  • Common carotid artery
  • Vagus nerve
  • Internal jugular vein 
  • Deep cervical lymph nodes 

* carotid arteries are medial to internal jugular veins 

24

What is #7

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Internal carotid artery

  • No branches in the neck

25

Name the branches of the external carotid artery

  • Superior thyroid
  • Acending pharyngeal
  • Lingual
  • Facial
  • Occipital 
  • posterior auricular
  • maxillary
  • Superficial temporal 

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26

Identify 

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Superior thyroid artery

  • Branch off external carotid artery

27

Identify 

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Lingual artery

  • Coming off of external carotid artery

28

Identify blood vessel.  What foramen does it run through?

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  • Internal jugular vein
  • Jugular foramen 

* drains with subclavial vein to form brachiocephalic veins

* runs in carotid sheath 

29

The mandibular nerve is a branch from what CN?

  • CN V Trigeminal nerve 
  • Mandibular nerve is known as CN V3

30

The nerve to mylohyoid is a branch off of what nerve? What muscles does this nerve innervate?

Madibular nerve (CN V3)

  • Innervates Mylohyoid and Anterior digastric muscles 

31

The glossopharyngeal nerve (CN IX) runs into what structure at the split of the common carotid artery?

Carotid sinus and carotid body 

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32

What nerve is this? What feature helps you decide this?

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Hypoglossal nerve (CN XII)

  • Nerve passes under mylohyoid belly on its way to the tongue 

33

Identify. What nerve does this fiber hitchhike on?

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Superior root of ansa cervicalis

  • off hypoglossal nerve (CN XII) 

34

The hypoglossal nerve carries fibers from C1 anterior ramus.  What 3 nerves hitchhike?

  • superior root and ansa cervicalis
  • geniohyoid
  • nerve to thyrohyoid 

* TAG

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35

Transverse cervical nerve.

  • Where is it from?
  • What does it innervate?

  • C2-C3
  • Sensory to skin of anterior triangle

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36

Ansa Cervicalis

  • Where does it come from?
  • What does it innervate?

  1. C1-C3; hypoglossal nerve
  2. motor to infrahyoid muscles 

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37

Where does the ansa cervicalis lie in relation to the carotid sheath

superficial to sheath 

38

What 3 ganglion are in the cervical sympathetic chain that can be seen in the anterior triangle of the neck?

  • superior cervical ganglion (C1-C4)
  • Middle cervical ganglion (C5-C6)
  • Inferior cervical ganglion (C7-C8) - Stellate ganglion (C7-T1)

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39

Identify this salivary gland

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submandibular gland 

40

What are the 2 side parts and middle part of the thyroid called? What vertebral level does the thyroid lie at?

  • 2 Lobes
  • Isthmus
  • c7-vertebral level 

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41

50% of people have what protrusion off of their thyroid gland?

Pyramidal lobe 

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42

Arterial and venous supply to thyroid

  • Artery: Superior thyroid; inferior thyroid
  • Veins: Superior thyroid; middle thyroid; inferior thyroid 

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43

10% of people get additonal blood supply to the thyroid gland via what artery? Where does it come from?

  • Thyroid ima artery
  • Direct branch of the aortic arch or surrounding great vessels 

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44

Where are the parathyroid glands located?

Posterior surface of thyroid gland

* blood supply and innervation similar to thyroid gland 

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45

What lies in the superficial fascia of the neck?

  • Cutaneous nerves
  • Blood and lymph vessels
  • Platysma muscle

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46

What structures lies in the superficial layer of the deep cervical fascia?

Trapezius and sternocleidomastoid muscles 

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47

What structures lie in the middle layer of the deep cervical fascia?

Muscular fascia

  • infrahyoid muscles

Pretracheal fascia

  • thyroid gland
  • trachea
  • Esophagus

Buccopharyngeal fascia 

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48

What structures lie in the deep layer of the deep cervical fascia?

prevertebral fascia

  • vertebral column
  • vertebral muscles
  • brachial plexus

Alar fascia 

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49

Identify the deep fascia of the neck

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a: Superficial (investing) layer

middle layers

b: muscular layer

c: pretracheal layer

deep layer

d: prevertebral layer 

50

Where does the retropharyngeal space lie? What is its purpose?

  • between buccopharyngeal and prevertebral fascia
  • Allows pharynx movement during swallowing

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51

What fascia seperates the the "true retropharyngeal space" and the "danger space"?

Alar fascia

  • Anterior: space stops at superior mediastinum (fuses with buccopharyngeal fascia) "True retropharyngeal space" 
  • Posterior: space opens into mediastinum "danger space * area for possible infection 

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